How can aquatic products be contaminated by novel coronavirus instead of infected? What are the characteristics of food contaminated by viruses?

Prior to this, the detection of novel coronavirus on the salmon cutting board at the Xinfadi Wholesale Market in Beijing attracted everyone's attention, but according to experts, how could aquatic products be contaminated by novel coronavirus rather than infected? What are the characteristics of food contaminated by viruses? Let's take a look at it.

First, what exactly happened when aquatic products were contaminated by novel coronavirus rather than infected?

In response to the emerging saying that "fish infect novel coronavirus", experts from the Chinese Centers for Disease Control and Prevention once again said that fish will not be infected with novel coronavirus, and so far no related infectious diseases have been found to be transmitted to humans through fish.

According to experts, aquatic products such as salmon at the Beijing Xinfadi Wholesale Market were detected because they were contaminated by novel coronavirus rather than infected. In all aspects of fishing, slaughtering, transportation, sales and processing, aquatic products may be contaminated by novel coronavirus, but novel coronavirus can not infect fish. Because the virus infects the host, it requires cellular receptors, while fish cells do not have the same receptors as human cells. Novel coronavirus can only infect mammals, and its pathological effects are mainly concentrated in the lungs. Fish have no lungs, so it is not easy to infect novel coronavirus.

Second, what are the characteristics of food contaminated by viruses?

1. Virus-contaminated food may occur sporadically or epidemic, and there is no correlation between the two. Sporadic occurrence means that the incidents of virus contamination of food do not occur in concentration, and there is no obvious linear relationship between the contamination events. This situation is mostly caused by different security measures, regions and natural conditions. Epidemic occurrence means that the amount of food contaminated by a certain virus in the same period and region significantly exceeds the usual amount of pollution, showing as epidemic pollution.

two。 There is a certain amount of time. Virus pollution and epidemic have obvious correlation with the season, such as enterovirus pollution mostly occurs in summer and autumn, respiratory virus pollution mostly occurs in winter and spring, in addition, the pollution of some viruses to food also has the characteristics of periodic changes.

3. It is regional. Virus pollution and prevalence are also related to the region. Some virus contamination of food is affected by natural conditions, media and the living habits of local residents, so it will show regional limitations. And the virus pollution and epidemic also showed exoticism.

Third, how to prevent food from being contaminated by viruses?

1. Stay away from poultry secretions and try to avoid touching live poultry, livestock and birds.

two。 Poultry and egg products must be fully cooked.

3. Strengthen exercise and enhance self-immunity.

4. Pay attention to personal hygiene, wash hands frequently and cover them with hands or toilet paper when coughing.

5. Get vaccinated.

6. Avoid traveling to the epidemic area.

7. Keep the indoor air unobstructed, pay attention to ventilation and environmental hygiene.

Because aquatic products may be contaminated by novel coronavirus rather than infected, we can rest assured that aquatic products are still safe, but we should pay attention to the fact that they must be heated at high temperature before eating.